When you requirement a toroid the simplest source is commonly to wind it yourself. The issue being that putting a few hundred windings around a ferrite sound is a genuine drag, particularly if you have to make a number of of them. This cheat established by [Jim W.] will save a great deal of time. He cuts the sound in half for the winding as well as reassembles it afterward.
Here you can see that he has half of the core mounted in a drill chuck. To get to this point he scored the ferrite before clamping half in a vice as well as whacking the extruding half with a block of wood as well as a hammer. He hasn’t discovered a best option for scoring the material (a utility knife or a triangular data both work however have drawbacks). Leave a comment if you’ve got any type of bright ideas.
Once the core is in two pieces he utilized some copper pipe with one end flattened as well as bent to the shape of the sound segment. With it hot glued in location he takes it for a spin (shown in the clip after the break). when the windings are done a bit of incredibly glue recombines the halves. This kind of thing is excellent for tracking power use.
[Thanks Ted by means of Workshop88 blog]